typedef struct { PADAPTER_OBJECT AdapterObject[2]; ULONG BufferSize; PVOID VirtualAddress; PHYSICAL_ADDRESS LogicalAddress; PMDL Mdl; } SOUND_DMA_BUFFER, *PSOUND_DMA_BUFFER;
The SOUND_DMA_BUFFER structure describes a DMA buffer. It is used as input to the SoundGetCommonBuffer and SoundFreeCommonBuffer functions.